EP1250106B1 - Rinsing cannula for rinsing a root canal of a tooth - Google Patents

Rinsing cannula for rinsing a root canal of a tooth Download PDF

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Publication number
EP1250106B1
EP1250106B1 EP01915164A EP01915164A EP1250106B1 EP 1250106 B1 EP1250106 B1 EP 1250106B1 EP 01915164 A EP01915164 A EP 01915164A EP 01915164 A EP01915164 A EP 01915164A EP 1250106 B1 EP1250106 B1 EP 1250106B1
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EP
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Prior art keywords
rinsing
cannula
root canal
end region
irrigation
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EP01915164A
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German (de)
French (fr)
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EP1250106A1 (en
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Christoph Zirkel
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ZIRKEL CHRISTOPH DR
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ZIRKEL CHRISTOPH DR
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C2201/00—Material properties
    • A61C2201/007—Material properties using shape memory effect

Definitions

  • the invention relates to a rinsing cannula for rinsing a Root canal of a tooth, the irrigation cannula being a supply channel for a rinsing liquid that is on the proximal, with a Syringe or the like liquid supply connected connectable end region of the irrigation cannula at least one inlet opening and on the distal, in the use position in the Root canal introduced at least one end region of the irrigation cannula Has outlet opening for the rinsing liquid.
  • Root canal treatment is an integral part of dentistry Root canal treatment.
  • After a mechanical instrumental processing is the root canal wall above it also covered with debris and a smear layer that made up There is abrasion of dentine, but it can also contain bacteria.
  • This one Smear layer the tightness of a root canal treatment root canal filling to be filled into the root canal and can be the source of a re-infection of the endodontus, should it largely removed by rinsing with adequate agents.
  • the root canal irrigation can also in the root canal located dentin chips, which the root canal can block, be removed.
  • the Root canal irrigation dissolves the organic and inorganic Root canal content, also in areas of the complex endodontic system, that of instrumental processing is not are accessible. This will possibly leave behind Bacteria do much of what is necessary for their survival Withdrawn substrate.
  • Other root canal irrigation tasks are the disinfection of the endodont, the introduction of a Lubricant for root canal instruments to be inserted into the root canal as well as a bleaching effect on the coronal and radical tooth hardness substances.
  • a rinsing cannula is already the beginning known type known to an existing stainless steel Has cannula part that with one end with a a syringe containing a flushing fluid supply can be connected is. On her other, in the use position in the root canal inserted end points the cannula part to each other opposite sides two in the direction of extension of the Outlet openings partially offset from one another for the rinsing liquid, the one over the cannula part axially penetrating feed channel with the flushing liquid supply are connected. Through these openings the irrigation fluid is introduced into the root canal.
  • the irrigation cannula has the disadvantage that it is due to the curvature of the root canal that is always present in practice only partially inserted into the root canal, which rinses the root canal in the area of the root tip is difficult. Can in the area of the root tip then organic or inorganic residues in the root canal remain, leading to reinfection of the endodont being able to lead.
  • suction / irrigation cannula for a Combined suction / flushing device known, the cannula part has a certain bending stiffness.
  • the suction / irrigation cannula has diametrically opposite one another at its distal end region arranged openings, on the one hand, the hydraulic Reduce pressure in the tissue surrounding the tooth should and through which on the other hand should be greater efficiency should be reached during suction. This cannula too allows only a limited cleaning of the root canal in the Area of the root tip.
  • the solution to this problem is that the distal End area of the irrigation cannula for flexible adjustment of the end area the course of the root canal during insertion Titanium or a titanium alloy, and that the outlet openings at the distal end of the irrigation cannula are diametrically opposed to each other.
  • the distal end area of the irrigation cannula is therefore flexible trained so that he is in the insertion movement in adapts its course to the curvature of the root canal.
  • By diametrically opposite each other arranged outlet openings on the one hand good mechanical stability of the cannula part in the area the outlet openings reached and on the other hand the Irrigation fluid is evenly introduced into the root canal.
  • the irrigation cannula thus enables complete cleaning and disinfection of the root canal. In particular, the Risk of reinfection of the root canal through the Root canal remaining organic or inorganic residues largely avoided.
  • the titanium alloy Shape memory alloy and in particular nickel and / or Contains aluminum as an alloy component (s).
  • the irrigation cannula then adapts flexibly to the respective position Root canal curvature but decreases after removal from the root canal due to shape memory or Memory effect back to its original, preferably straight Form a.
  • the irrigation cannula can be removed from the Root canal may be subjected to a temperature treatment, to the return caused by the memory effect to support their original shape.
  • irrigation cannula when the irrigation cannula is reinserted into a root canal one caused by a pre-bend in the irrigation cannula Material tension in the irrigation cannula avoided, so that Risk of the rinsing cannula breaking off when inserting or Removed from the root canal and during the rinsing process is largely avoided.
  • the irrigation cannula is suitable especially for multiple use.
  • the outlet openings through a perforation the lateral boundary wall of the feed channel is formed are.
  • the irrigation cannula then enables an even better and more uniform cleaning of the entire root canal.
  • the from coupling receptacle and Coupling counterpart formed coupling then allows in Use position a good fixation of the irrigation cannula on the Syringe, but the coupling is still easy to release, if the irrigation cannula sterilizes an autoclave, for example must become.
  • a rinsing cannula for rinsing one Root canal 2 of a tooth 3 has a cannula part 4 with a feed channel for a rinsing liquid located therein.
  • a coupling seat 5 On One of the axial ends of the cannula part 4 is a coupling seat 5 arranged, releasably with a matching coupling counterpart a syringe having a flushing liquid supply is connectable.
  • the feed channel faces the coupling receptacle 5 an inlet opening 6 and at that of the coupling receptacle 5 4 outlet openings facing away from the distal end region of the cannula part 7 for the rinsing liquid.
  • the cannula part 4 consists of a bendable titanium alloy, which, for example, between 40 and 60 weight percent titanium and can contain at least one further alloy component, namely a soft metal, such as nickel or Aluminum.
  • the material of the cannula part 4 has a memory effect on, i.e. it deforms under bending stress and takes its original shape essentially resumes when the Bending stress is removed.
  • the cannula part 4 is thereby insertion force exerted on the irrigation cannula 1 flexibly deformed and adapts in its course to the curved Root canal 2 course.
  • 2 clearly shows that the free end of the Cannula part 4 corresponding to the course of the root canal 2 angled relative to the other areas of the cannula part 4 is.
  • the cannula part 4 can thereby to the root tip be inserted into the root canal 2.
  • Fig. 1 it can be seen that the irrigation cannula 1 on her The distal end region is closed at the end with a cap part 9 is and that the outlet openings 7 at the side the distal end region of the irrigation cannula 1 are arranged.
  • two outlet openings 7 are diametrically opposite one another provided opposite on the circumference of the cannula part 4.
  • the outlet openings 7 can for example by in the wall of Cannula part 4 milled and / or drilled holes be made.
  • the rinsing cannula 1 thus points to rinsing a root canal 2 of a tooth 3 on a feed channel for rinsing liquid.
  • On the proximal, with a syringe or the like liquid supply connected or connectable end area of the Rinsing cannula 1 is at least one inlet opening 6 and the distal, in the use position in the root canal 2 introduced end area the irrigation cannula 1 at least one outlet opening 7 for the Flush liquid provided.
  • the distal end of the irrigation cannula 1 is made of titanium or a titanium alloy, for flexible Adapt the end area to the course of the root canal 2 at Introduce.

Abstract

A rinsing cannula (1) to rinse a root canal (2) of a tooth (3) having a supply channel for rinsing fluid. A proximal end area of the rinsing cannula (1) is connected to or connectable to a syringe or similar fluid supply and has at least one inlet opening (6), and a distal end area of the rinsing cannula (1) that is insertable into the root canal (2) in its position of use has at least one outlet opening (7) for the rinsing fluid. The distal end area of the rinsing cannula (1) is formed of titanium or a titanium alloy for flexible adaptation of the end area to the shape of the root canal (2) when it is inserted.

Description

Die Erfindung betrifft eine Spülkanüle zum Spülen eines Wurzelkanals eines Zahnes, wobei die Spülkanüle einen Zuführkanal für eine Spülflüssigkeit hat, der an dem proximalen, mit einer Spritze oder dergleichen Flüssigkeitszuführung verbunden oder verbindbaren Endbereich der Spülkanüle wenigstens eine Eintrittsöffnung und an dem distalen, in Gebrauchsstellung in den Wurzelkanal eingeführten Endbereich der Spülkanüle zuindest eine Austrittsöffnung für die Spülflüssigkeit aufweist.The invention relates to a rinsing cannula for rinsing a Root canal of a tooth, the irrigation cannula being a supply channel for a rinsing liquid that is on the proximal, with a Syringe or the like liquid supply connected connectable end region of the irrigation cannula at least one inlet opening and on the distal, in the use position in the Root canal introduced at least one end region of the irrigation cannula Has outlet opening for the rinsing liquid.

Die Spülung des Wurzelkanals mit antibakteriell wirksamen und gewebeauflösenden Spülflüssigkeiten, das chemische Debridement, ist in der Zahnmedizin ein wesentlicher Bestandteil der Wurzelkanalaufbereitung. In zahlreichen Studien konnte nachgewiesen werden, daß es allein mit mechanischen Mitteln nicht möglich ist, alle Bereiche des Endodonts ausreichend zu bearbeiten. Es bleiben immer unterschiedlich ausgedehnte, nicht instrumentierte Wandbezirke zurück. Nach einer mechanischen instrumentellen Bearbeitung ist die Wurzelkanalwand darüber hinaus mit Debris und einer Schmierschicht bedeckt, die aus Dentinabrieb besteht, aber auch Bakterien enthalten kann. Da diese Schmierschicht die Dichtigkeit der bei einer Wurzelbehandlung in den Wurzelkanal einzufüllenden Wurzelkanalfüllung herabsetzt und Quelle einer Reinfektion des Endodonts sein kann, sollte sie durch Spülungen mit adäquaten Agenzien weitgehend entfernt werden. Durch die Wurzelkanalspülung können darüber hinaus aber auch in dem Wurzelkanal befindliche Dentinspäne, welche den Wurzelkanal blockieren können, entfernt werden. Außerdem ermöglicht die Wurzelkanalspülung eine Auflösung des organischen und anorganischen Wurzelkanalinhalts, auch in Bereichen des komplexen endodontischen Systems, die der instrumentellen Bearbeitung nicht zugänglich sind. Hierdurch wird eventuell zurückbleibenden Bakterien ein Großteil des zu ihrem Überleben notwendigen Substrats entzogen. Weitere Aufgaben der Wurzelkanalspülung sind die Desinfektion des Endodonts, das Einbringen eines Gleitmittels für in den Wurzelkanal einzuführende Wurzelkanalinstrumente sowie eine Bleichwirkung auf die koronalen und radikulären Zahnhärtsubstanzen.Rinsing the root canal with antibacterial and tissue-dissolving irrigation fluids, chemical debridement, is an integral part of dentistry Root canal treatment. Has been proven in numerous studies be that it is not by mechanical means alone it is possible to adequately cover all areas of the endodont to edit. There are always different expansions, not instrumented wall districts back. After a mechanical instrumental processing is the root canal wall above it also covered with debris and a smear layer that made up There is abrasion of dentine, but it can also contain bacteria. This one Smear layer the tightness of a root canal treatment root canal filling to be filled into the root canal and can be the source of a re-infection of the endodontus, should it largely removed by rinsing with adequate agents. The root canal irrigation can also in the root canal located dentin chips, which the root canal can block, be removed. In addition, the Root canal irrigation dissolves the organic and inorganic Root canal content, also in areas of the complex endodontic system, that of instrumental processing is not are accessible. This will possibly leave behind Bacteria do much of what is necessary for their survival Withdrawn substrate. Other root canal irrigation tasks are the disinfection of the endodont, the introduction of a Lubricant for root canal instruments to be inserted into the root canal as well as a bleaching effect on the coronal and radical tooth hardness substances.

Aus EP-A 0 290 011 ist bereits eine Spülkanüle der eingangs genannten Art bekannt, die an ein aus Edelstahl bestehendes Kanülenteil aufweist, das mit seinem einen Ende mit einer einen Spülflüssigkeitsvorrat beinhaltenden Spritze verbindbar ist. An ihrem anderen, in Gebrauchsstellung in den Wurzelkanal eingeführten Ende weist das Kanülenteil an einander gegenüberliegenden Seiten zwei in Erstreckungsrichtung des Kanülenteils zueinander versetzt angeordnete Austrittsöffnungen für die Spülflüssigkeit auf, die über einen das Kanülenteil axial durchsetzenden Zuführkanal mit dem Spülflüssigkeitsvorrat verbundenen sind. Durch diese Austrittsöffnungen hindurch wird die Spülflüssigkeit in den Wurzelkanal eingebracht.From EP-A 0 290 011 a rinsing cannula is already the beginning known type known to an existing stainless steel Has cannula part that with one end with a a syringe containing a flushing fluid supply can be connected is. On her other, in the use position in the root canal inserted end points the cannula part to each other opposite sides two in the direction of extension of the Outlet openings partially offset from one another for the rinsing liquid, the one over the cannula part axially penetrating feed channel with the flushing liquid supply are connected. Through these openings the irrigation fluid is introduced into the root canal.

Die Spülkanüle hat jedoch den Nachteil, dass sie sich aufgrund der in der Praxis immer vorhandenen Krümmung des Wurzelkanals nur teilweise in den Wurzelkanal einführen lässt, wodurch das Spülen des Wurzelkanals im Bereich der Wurzelspitze erschwert wird. Im Bereich der Wurzelspitze können dann in dem Wurzelkanal organische oder anorganische Rückstände verbleiben, die zu einer Reinfektion des Endodonts führen können.However, the irrigation cannula has the disadvantage that it is due to the curvature of the root canal that is always present in practice only partially inserted into the root canal, which rinses the root canal in the area of the root tip is difficult. Can in the area of the root tip then organic or inorganic residues in the root canal remain, leading to reinfection of the endodont being able to lead.

Aus US-A 4 276 880 ist ferner eine Saug-/Spülkanüle für eine kombinierte Saug-/Spülvorrichtung bekannt, deren Kanülenteil eine gewisse Biegsteifigkeit aufweist. Die Saug-/Spülkanüle hat an ihrem distalen Endbereich diametral einander gegenüberliegend angeordnete Öffnungen, die einerseits den hydraulischen Druck in dem den Zahn umgebenden Gewebe reduzieren sollen und durch die andererseits soll ein größerer Wirkungsgrad beim Absaugen zu erreicht werden soll. Auch diese Kanüle ermöglicht nur eine begrenzte Reinigung des Wurzelkanals im Bereich der Wurzelspitze.From US-A 4 276 880 a suction / irrigation cannula for a Combined suction / flushing device known, the cannula part has a certain bending stiffness. The suction / irrigation cannula has diametrically opposite one another at its distal end region arranged openings, on the one hand, the hydraulic Reduce pressure in the tissue surrounding the tooth should and through which on the other hand should be greater efficiency should be reached during suction. This cannula too allows only a limited cleaning of the root canal in the Area of the root tip.

Es besteht deshalb die Aufgabe, eine Spülkanüle der eingangs genannten Art zu schaffen, die auch bei gekrümmten Wurzelkanälen auf einfache Weise über die gesamte Länge des Wurzelkanals eine vollständige Durchspülung des Wurzelkanals mit der Spülflüssigkeit ermöglicht.There is therefore the task of a irrigation cannula at the beginning to create the type mentioned, even with curved root canals in a simple way over the entire length of the root canal a complete flushing of the root canal with the Allows rinsing liquid.

Die Lösung dieser Aufgabe besteht darin dass der distale Endbereich der Spülkanüle zum flexiblen Anpassen des Endbereichs an den Verlauf des Wurzelkanals beim Einführen aus Titan oder einer Titan-Legierung besteht, und dass die Austrittsöffnungen an dem distalen Endbereich der Spülkanüle diametral einander gegenüberliegend angeordnet sind.The solution to this problem is that the distal End area of the irrigation cannula for flexible adjustment of the end area the course of the root canal during insertion Titanium or a titanium alloy, and that the outlet openings at the distal end of the irrigation cannula are diametrically opposed to each other.

Der distale Endbereich der Spülkanüle ist also flexibel ausgebildet, so dass er sich bei der Einführbewegung in seinem Verlauf an die Krümmung des Wurzelkanals anpasst. In vorteilhafter Weise kann dadurch die Spülkanüle bis zur Wurzelspitze in den Wurzelkanal eingeführt werden, so dass dieser über seine gesamte Länge mit der Spülflüssigkeit durchspült werden kann. Durch die diametral einander gegenüberliegend angeordneten Austrittsöffnungen wird einerseits eine gute mechanische Stabilität des Kanülenteils im Bereich der Austrittsöffnungen erreicht und andererseits wird die Spülflüssigkeit gleichmäßig in den Wurzelkanal eingeleitet. Die Spülkanüle ermöglicht dadurch eine vollständige Reinigung und Desinfektion des Wurzelkanals. Insbesondere wird die Gefahr einer Reinfizierung des Wurzelkanals durch in dem Wurzelkanal verbleibende organische oder anorganische Rückstände weitestgehend vermieden.The distal end area of the irrigation cannula is therefore flexible trained so that he is in the insertion movement in adapts its course to the curvature of the root canal. In This advantageously allows the irrigation cannula to Root tip are inserted into the root canal so that this over its entire length with the rinsing liquid can be flushed. By diametrically opposite each other arranged outlet openings on the one hand good mechanical stability of the cannula part in the area the outlet openings reached and on the other hand the Irrigation fluid is evenly introduced into the root canal. The irrigation cannula thus enables complete cleaning and disinfection of the root canal. In particular, the Risk of reinfection of the root canal through the Root canal remaining organic or inorganic residues largely avoided.

Besonders vorteilhaft ist, wenn die Titan-Legierung eine Formgedächtnis-Legierung ist und insbesondere Nickel und/oder Aluminium als Legierungsbestandteil(e) enthält. Die Spülkanüle paßt sich dann in Gebrauchsstellung flexibel an die jeweilige Krümmung des Wurzelkanals an, nimmt aber nach der Entnahme aus dem Wurzelkanal aufgrund des Formgedächtnis- oder Memoryeffekts wieder ihre ursprüngliche, vorzugsweise gerade Form ein. Dabei kann die Spülkanüle nach der Entnahme aus dem Wurzelkanal ggf. einer Temperaturbehandlung unterzogen werden, um die durch den Memoryeffekt bewirkte Rückführung zu ihrer ursprünglichen Formgebung zu unterstützen. Somit wird bei einem erneuten Einführen der Spülkanüle in einen Wurzelkanal eine durch eine Vorbiegung der Spülkanüle verursachte Materialspannung in der Spülkanüle vermieden, so dass die Gefahr eines Abbrechens der Spülkanüle beim Einsetzen oder Entnehmen aus dem Wurzelkanal sowie während des Spülvorganges weitestgehend vermieden ist. Die Spülkanüle eignet sich besonders für eine mehrfache Verwendung.It is particularly advantageous if the titanium alloy Shape memory alloy and in particular nickel and / or Contains aluminum as an alloy component (s). The irrigation cannula then adapts flexibly to the respective position Root canal curvature but decreases after removal from the root canal due to shape memory or Memory effect back to its original, preferably straight Form a. The irrigation cannula can be removed from the Root canal may be subjected to a temperature treatment, to the return caused by the memory effect to support their original shape. Thus when the irrigation cannula is reinserted into a root canal one caused by a pre-bend in the irrigation cannula Material tension in the irrigation cannula avoided, so that Risk of the rinsing cannula breaking off when inserting or Removed from the root canal and during the rinsing process is largely avoided. The irrigation cannula is suitable especially for multiple use.

Bei einer vorteilhaften Ausführungsform der Erfindung ist vorgesehen, dass die Austrittsöffnungen durch eine Perforation der seitlichen Begrenzungswand des Zuführkanals gebildet sind. Die Spülkanüle ermöglicht dann eine noch bessere und gleichmäßigere Reinigung des gesamten Wurzelkanals.In an advantageous embodiment of the invention provided that the outlet openings through a perforation the lateral boundary wall of the feed channel is formed are. The irrigation cannula then enables an even better and more uniform cleaning of the entire root canal.

An dem proximalen Endbereich der Spülkanüle kann eine vorzugsweise ein Schraubgewinde aufweisende Kupplungsaufnahme zum lösbaren Verbinden mit einem dazu passenden Kupplungsgegenstück einer Spritze oder dergleichen Flüssigkeitszuführung vorgesehen sein. Die aus Kupplungsaufnahme und Kupplungsgegenstück gebildete Kupplung ermöglicht dann in Gebrauchsstellung eine gute Fixierung der Spülkanüle an der Spritze, wobei die Kupplung aber dennoch leicht lösbar ist, wenn die Spülkanüle beispielsweise einem Autoklaven sterilisiert werden muss.At the proximal end region of the irrigation cannula, one can preferably a coupling receptacle with a screw thread for detachable connection with a matching coupling counterpart a syringe or the like liquid supply be provided. The from coupling receptacle and Coupling counterpart formed coupling then allows in Use position a good fixation of the irrigation cannula on the Syringe, but the coupling is still easy to release, if the irrigation cannula sterilizes an autoclave, for example must become.

Nachfolgend ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert. Es zeigen zum Teil stärker schematisiert:

Fig. 1
eine schematisch dargestellte Seitenansicht einer Spülkanüle und
Fig. 2
einen Längsschnitt durch einen Zahn, in dessen Wurzelkanal die Spülkanüle eingeführt ist.
An exemplary embodiment of the invention is explained in more detail below with reference to the drawing. Some of them show more schematically:
Fig. 1
a schematically illustrated side view of a irrigation cannula and
Fig. 2
a longitudinal section through a tooth, in the root canal of which the irrigation cannula is inserted.

Eine im ganzen mit 1 bezeichnete Spülkanüle zum Spülen eines Wurzelkanals 2 eines Zahns 3 weist ein Kanülenteil 4 mit einem darin befindlichen Zuführkanal für eine Spülflüssigkeit auf. An einem der Axialenden des Kanülenteils 4 ist eine Kupplungsaufnahme 5 angeordnet, die lösbar mit einem dazu passenden Kupplungsgegenstück einer einen Spülflüssigkeitsvorrat aufweisenden Spritze verbindbar ist. Der Zuführkanal weist an der Kupplungsaufnahme 5 eine Eintrittsöffnung 6 und an dem der Kupplungsaufnahme 5 abgewandten distalen Endbereich des Kanülenteils 4 Austrittsöffnungen 7 für die Spülflüssigkeit auf.A rinsing cannula, generally designated 1, for rinsing one Root canal 2 of a tooth 3 has a cannula part 4 with a feed channel for a rinsing liquid located therein. On One of the axial ends of the cannula part 4 is a coupling seat 5 arranged, releasably with a matching coupling counterpart a syringe having a flushing liquid supply is connectable. The feed channel faces the coupling receptacle 5 an inlet opening 6 and at that of the coupling receptacle 5 4 outlet openings facing away from the distal end region of the cannula part 7 for the rinsing liquid.

Das Kanülenteil 4 besteht aus einer biegbaren Titan-Legierung, die beispielsweise zwischen 40 und 60 Gewichtsprozente Titan und wenigstens einen weiteren Legierungsbestandteil enthalten kann, nämlich ein weiches Metall, wie zum Beispiel Nickel oder Aluminium. Das Material des Kanülenteils 4 weist einen Memoryeffekt auf, d.h. es verformt sich bei Biegebeanspruchung und nimmt seine ursprüngliche Form im wesentlichen wieder ein, wenn die Biegebeanspruchung entfernt wird.The cannula part 4 consists of a bendable titanium alloy, which, for example, between 40 and 60 weight percent titanium and can contain at least one further alloy component, namely a soft metal, such as nickel or Aluminum. The material of the cannula part 4 has a memory effect on, i.e. it deforms under bending stress and takes its original shape essentially resumes when the Bending stress is removed.

Zum Spülen des Wurzelkanals 2 wird der die Austrittsöffnungen 7 aufweisende distale Endbereich der Spülkanüle 1 durch eine zuvor in den Zahn 3 eingebrachte Öffnung 8 hindurch in den Wurzelkanal 2 eingeführt. Dabei wird das Kanülenteil 4 durch die beim Einführen auf die Spülkanüle 1 ausgeübte Einführkraft flexibel verformt und paßt sich in ihrem Verlauf an den gekrümmten Verlauf des Wurzelkanals 2 an. In Fig. 2 ist deutlich erkennbar, dass das in den Wurzelkanal 2 eingeführte freie Ende des Kanülenteils 4 entsprechend dem Verlauf des Wurzelkanals 2 gegenüber den übrigen Bereichen des Kanülenteils 4 abgewinkelt ist. Das Kanülenteil 4 kann dadurch bis zur Wurzelspitze in den Wurzelkanal 2 eingeführt werden. Danach wird durch Betätigen der Spritze die Spülflüssigkeit durch die Austrittsöffnungen 7 hindurch in den Wurzelkanal 2 eingeleitet. Dabei wird der praktisch der gesamte in dem Wurzelkanal 2 befindliche organische und anorganische Wurzelkanalinhalt aus dem Wurzelkanal 2 ausgespült und der Wurzelkanal 2 wird desinfiziert.To rinse the root canal 2, the outlet openings 7 having distal end region of the irrigation cannula 1 by a opening 8 previously introduced into the tooth 3 into the Root canal 2 introduced. The cannula part 4 is thereby insertion force exerted on the irrigation cannula 1 flexibly deformed and adapts in its course to the curved Root canal 2 course. 2 clearly shows that the free end of the Cannula part 4 corresponding to the course of the root canal 2 angled relative to the other areas of the cannula part 4 is. The cannula part 4 can thereby to the root tip be inserted into the root canal 2. After that, through Actuate the syringe through the outlet openings 7 introduced into the root canal 2. In doing so, practically everything in the root canal 2 organic and inorganic root canal contents the root canal 2 rinsed out and the root canal 2 becomes disinfected.

In Fig. 1 ist erkennbar, dass die Spülkanüle 1 an ihrem distalen Endbereich stirnseitig mit einem Kappenteil 9 verschlossen ist und dass die Austrittsöffnungen 7 seitlich an dem distalen Endbereich der Spülkanüle 1 angeordnet sind. Dabei sind zwei Austrittsöffnungen 7 diametral einander gegenüberliegend am Umfang des Kanülenteils 4 vorgesehen. Selbstverständlich sind jedoch auch andere Ausführungsformen denkbar, bei denen mehr Austrittsöffnungen 7 am Umfang des Kanülenteils 4 verteilt angeordnet sein können. Die Austrittsöffnungen 7 können beispielsweise durch in Wandung des Kanülenteils 4 eingebrachte Einfräsungen und/oder Bohrungen hergestellt sein.In Fig. 1 it can be seen that the irrigation cannula 1 on her The distal end region is closed at the end with a cap part 9 is and that the outlet openings 7 at the side the distal end region of the irrigation cannula 1 are arranged. Here, two outlet openings 7 are diametrically opposite one another provided opposite on the circumference of the cannula part 4. Of course, other embodiments are, of course conceivable, in which more outlet openings 7 on the circumference of Cannula part 4 can be arranged distributed. The outlet openings 7 can for example by in the wall of Cannula part 4 milled and / or drilled holes be made.

Die Spülkanüle 1 weist also zum Spülen eines Wurzelkanals 2 eines Zahnes 3 einen Zuführkanal für Spülflüssigkeit auf. An dem proximalen, mit einer Spritze oder dergleichen Flüssigkeitszuführung verbunden oder verbindbaren Endbereich der Spülkanüle 1 ist wenigstens eine Eintrittsöffnung 6 und an dem distalen, in Gebrauchsstellung in den Wurzelkanal 2 eingeführten Endbereich der Spülkanüle 1 zuindest eine Austrittsöffnung 7 für die Spülflüssigkeit vorgesehen. Der distale Endbereich der Spülkanüle 1 besteht aus Titan oder einer Titan-Legierung, zum flexibelen Anpassen des Endbereichs an den Verlauf des Wurzelkanals 2 beim Einführen.The rinsing cannula 1 thus points to rinsing a root canal 2 of a tooth 3 on a feed channel for rinsing liquid. On the proximal, with a syringe or the like liquid supply connected or connectable end area of the Rinsing cannula 1 is at least one inlet opening 6 and the distal, in the use position in the root canal 2 introduced end area the irrigation cannula 1 at least one outlet opening 7 for the Flush liquid provided. The distal end of the irrigation cannula 1 is made of titanium or a titanium alloy, for flexible Adapt the end area to the course of the root canal 2 at Introduce.

Claims (4)

  1. Rinsing cannula (1) for rinsing a root canal (2) of a tooth (3), the rinsing cannula (1) having a delivery channel for a rinsing liquid which comprises, at the proximal end region of the rinsing cannula (1) which is connected or connectable to a syringe or similar liquid delivery means, at least one inlet opening (6) and, at the distal end region of the rinsing cannula (1) which is inserted into the root canal (2) in the position of use and which is closed off at the end face, lateral outlet openings (7) for the rinsing liquid, characterised in that the distal end region of the rinsing cannula (1) consists of titanium or a titanium alloy for flexibly adapting the end region to the configuration of the root canal (2) during insertion, and in that the outlet openings (7) are arranged diametrically opposite one another at the distal end region of the rinsing cannula (1).
  2. Rinsing cannula (1) according to claim 1, characterised in that the titanium alloy is a shape-memory alloy and in particular contains nickel and/or aluminium as alloy component(s).
  3. Rinsing cannula (1) according to claim 1 or 2, characterised in that the outlet openings (7) are formed by perforating the lateral boundary wall of the delivery channel.
  4. Rinsing cannula (1) according to one of claims 1 to 3, characterised in that at the proximal end region of the rinsing cannula (1) is provided a coupling socket (5) preferably having a screw thread for releasably connecting to a mating coupling counterpart of a syringe or similar liquid delivery means.
EP01915164A 2000-01-29 2001-01-25 Rinsing cannula for rinsing a root canal of a tooth Expired - Lifetime EP1250106B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20001584U 2000-01-29
DE20001584U DE20001584U1 (en) 2000-01-29 2000-01-29 Rinsing cannula for rinsing a root canal of a tooth
PCT/EP2001/000833 WO2001054608A1 (en) 2000-01-29 2001-01-25 Rinsing cannula for rinsing a root canal of a tooth

Publications (2)

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EP1250106A1 EP1250106A1 (en) 2002-10-23
EP1250106B1 true EP1250106B1 (en) 2004-07-28

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EP01915164A Expired - Lifetime EP1250106B1 (en) 2000-01-29 2001-01-25 Rinsing cannula for rinsing a root canal of a tooth

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US (1) US20030013064A1 (en)
EP (1) EP1250106B1 (en)
JP (1) JP2003526416A (en)
AT (1) ATE271836T1 (en)
AU (1) AU2001242353A1 (en)
DE (2) DE20001584U1 (en)
ES (1) ES2225500T3 (en)
TR (1) TR200402749T4 (en)
WO (1) WO2001054608A1 (en)

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AU2001242353A1 (en) 2001-08-07
EP1250106A1 (en) 2002-10-23
TR200402749T4 (en) 2004-12-21
WO2001054608A1 (en) 2001-08-02
DE50102997D1 (en) 2004-09-02
DE20001584U1 (en) 2000-03-23
JP2003526416A (en) 2003-09-09
ES2225500T3 (en) 2005-03-16
ATE271836T1 (en) 2004-08-15
US20030013064A1 (en) 2003-01-16

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